利用强磁力形成射流的药型罩仿真方法研究

豆剑豪，贾　鑫，黄正祥，马　彬

（南京理工大学机械工程学院，江苏　南京　290014）

摘　要：传统聚能装药是依靠炸药爆轰压垮金属药型罩来形成金属射流，而强磁加载药型罩是利用电磁力压垮药型罩形成金属射流，是一种全新的射流成型方法。以加载模型等效为RCL 电路模型，结合麦克斯韦尔方程组，推导出电磁力的计算公式。采用“电-磁-力”耦合模拟算法，利用Ansoft Maxwell和Autodyn 仿真软件，分别对文献［5］中变壁厚圆锥药型罩电磁加载过程中电路、电磁场以及电磁力压垮药型罩形成射流进行了数值仿真，得到了较好的射流形态，其中射流头部速度为8 477 m／s，尾部速度为3 370 m／s。结果表明，射流形态与实验结果较为吻合，射流头部速度相对误差为8.8%，验证了该仿真方法的可行性。

关键词：兵器科学与技术；电磁场；射流；数值仿真

中图分类号：TJ410.1　文献标志码：A

基金项目：国家自然科学基金青年项目（No.11602110）；江苏省研究生科研与实践创新计划项目（No.KYCX18＿0471）。

作者简介：豆剑豪（1994—），男，博士研究生，E-mail：njustdjh＠163.com。(www.xing528.com)

Research on simulation method for the jet forming of shaped liner driven by strong electromagnetic energy

DOU Jianhao，JIA Xin，HUANG Zhengxiang，MA Bin

（School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China）

Abstract：The traditional shaped charge is by the explosive detonation driving the shaped charge liner to form the jet.Electromagnetic driving is a new way to drive liner by electromagnetic force to form jets.we equiva⁃lent the driving model with the RCL circuit model，and combine with Maxwell equations，the calculation formula of electromagnetic force is deduced.Then we use a Coupled Electro-Magnetic-Force simulation method by An⁃soft Maxwell and Autodyn to make simulation study of the circuit，electromagnetic field and the liner driven by e⁃lectromagnetic force of the variable-thickness conical shaped liner in reference 5.And we got good jet shape and the jet tip velocity is 8 477 m／s，jet tail velocity is 3 370 m／s.The result shows that the jet shape is well fit with the experimental results，and the relative error of jet tip velocity is 8.8%，which verifies the correctness of the simulation method.

Keywords：armament science and technology；electromagnetic field；jet；numerical simulation